Apr 30, 2015· It'S a MADDOCK & CO STONE CHINA BURSLEM ENGLAND. How can I find out it's value. My father gave it to me over 40 years ago I think and it was old then I believe. Reply. Diana says. October 11, 2017 at 8:15 pm. Hi Doris–did you look at the examples of Maddock ironstone in this price guide? They should help you get a ball park figure.